Pressure activated valve for fire fighting installation

Details Pressure activated valve for fire fighting installation Pressure activated valve for fire fighting installation

A - Human Necessities

62

C

A62C 35/68 (2006.01) A62C 35/64 (2006.01) F15B 15/00 (2006.01) F16K 31/122 (2006.01)

Patent

CA 2156057

A fire fighting installation is taught having a high operating pressure provided with a valve which is reliable without access to electric current and is of a simple structure. The valve has a spindle which is movable between a stand-by position and an activated position. A secondary liquid source with a low pressure acts on the spindle in the direction towards the stand-by position and a spring acts on the spindle in the opposite direction. When the pressure in the secondary liquid source, due to liquid delivery to a released spray head in the installation, has fallen to a predeterminable value the spring drives the spindle to the activated position and opens a direct connection from the inlet of the valve to its outlet.

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